ch11-p033 - 33. If we write (for the general case) r = x i...

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() 22 ˆˆ 3.0 [(3.0)( 6.0) (8.0)(5.0)]k ( 1.7 10 kg m s)k. =− −= × G A (b) The torque is given by Eq. 11-14, G G G τ rF . We write G rxy =+ ## i j and G FF x = # i and obtain G =+× = xy F y F xx # # ij i k e j e j since ii ×= 0 and ## # ji k . ×=− Thus, we find ( ) 8.0m 7.0N k (56N m)k. = G (c) According to Newton’s second law G G A = dd t , so the rate of change of the angular momentum is 56 kg m 2 /s 2 , in the positive z direction. 33. If we write (for the general case) G rxyz =++ ### k , then (using Eq. 3-30) we find G G r v × is equal to
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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